A man's penis after unprotected anal intercourse with either a male or female partner.
Paul had a recurring case of sewer shrimp after his dumpster date with Rufus the bum.

What's that horrible smell, Jaemes? " Well Shelly was filling a little frisky last night and didn't mention that she hadn't showered in a week, must be residual sewer shrimp syndrome.

Stay away from Adoni, that sick fuck thinks his sewer shrimp is for show and tell.
by Donald A. February 12, 2019
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